Statistics Quiz # 6

The source of Experimental Error is_____

Subject error

Participants’ variation in interest

Experimenter’s changing enthusiasm

All of these

The other name for Multiple Comparison Tests is _____

Posteriori test

Post hoc test

Hsd test

Both a and b

Multiple ts is a design where mean differences among_____ groups are assessed by more than one t test.

One or more

Two

Two or more

Three or more

Using multiple ts has the effect of inflating the overall α level to level that is_____

P > .05

P > 0.05

P > 5.0

P = 5.0

_____ is a measure of effect size in ANOVA that can be interpreted as the percentage of variance in the dependent variable accounted for by the independent variable.

Eta

Omega Squared

Phi

None of these

The word omnibus means covering one situation at once.

True

False

ANOVA is an omnibus test because any real pattern of mean differences can cause the rejection of the null hypothesis.

True

False

Sampling distribution is a theoretical distribution made up of all possible _____ samples from the same population.

Varying-sized random

Same-sized random

Varying-sized similar

Same-sized similar

Standard Error of the mean is the _____ of a sampling distribution of means.

Variance

Standard deviation

Standard score

None of these

Subject Error is a curious and historical name for the difference between a participant’s score in _____

A group

A group’s mean

A group’s range

Both a and b

Within Groups Variance is a measure of the _____ of participant’s score from the group’s mean.

Sum of differences

Square of differences

Sum of the squared differences

None of these

The term a Posteriori is Latin for _____

What comes later

After this

After the later

None of these

Harmonic mean is defined as the _____ of the arithmetic mean of the reciprocals of the scores.

Multiplication

Square

Reciprocal

All of these

In Least Significant Difference Test p level may be_____

0.5

0.05

Less than 0.05

Greater than 0.05

In the Least Significant Difference Test the probability of _____ error increases.

Type I

Type II

Both

None

The other name for Multiple Comparison Tests is _____

Posteriori test

Post hoc test

Hsd test

Both a and b

The term post hoc is Latin for_____

After this

What comes later

After the later

None of these

Turkey’s HSD Test is a popular multiple comparison test that is considered_____

Too liberal

Not too liberal

Not too conservative

Both b and c

ANOVA Repeated Measures Test is used to assess which of the following?

Differences of mean for each level of the independent variable

Differences between two groups of participants

Relationships between two data sets

All of these

The purpose of Randomized Block Design is to_____

Minimize the variance among units within blocks

Minimize the variance among blocks

Both

None

All are correct about about Completely Randomized Factorial Design except_____

Participants are randomly assigned to the conditions

May allow for the implication of causation

Does not allow for the implication of causation

All are correct

A design in ANOVA where two or more main effects and the interaction between the main effects of independent variables can be evaluated for a single dependent variable is known as _____

Randomized block design

Repeated measures design

Factorial design

None of these

The interaction effect may reveal outcomes that could not have been predicted had the experiment consisted of two separate one-factor ANOVAs of the same independent variables.

True

False

Each main effect must have how many levels?

No level

One leve

Two levels

Two or more levels

Simple effects is a situation where_____

Interaction is significant

Interaction is non significant

Experimenter is not interested in all levels of one independent variable

Experimenter is interested in only two levels of the other independent variable

The term Highly Significant has the connotation of judgment so the significant results can be reported_____

At lowest p level possible

As nonsignificant

As not significant

All of these

Omega Squared is a measure of effect size in ANOVA that can be interpreted as the _____ in the dependent variable accounted for by the independent variable.

Sum of variance

Square of variance

Percentage of variance

Percentage of squared variance

Statisticians avoid the use of phrase “The Null Hypothesis was accepted” because of the reason that_____

The experiment may lack power

The independent variable may have too weak an effect

The dependent variable may be insensitive to the independent variable

All of these

A factor in a completely randomized ANOVA where the participants are randomly assigned to each level of a factor, resulting in different participants in each level is known as_____

Between Subjects Variable

Between Groups Variable

Within Subjects Variable

None of these

Repeated Measures ANOVA is an experimental design where the same participant serves under every level of two factor in the ANOVA.

True

False